Rogier van der Weyden is a splendid resource for many wonderful gowns of the 15th century - and gives really good hints on how something is set together.
This example is from the Koninklijk Museum voor Schone Kunsten, Antwerpen. The picture is from the Web Gallery of Art
This really nice example is from the Abegg-Stiftung in Riggisberg-Switzerland. The Colors are too dark on the picture - but Alas - it is all the WGA had.
The Abeggstiftung is closed in Winter - thats why I can't get another picture.
But I do have some sketches from last autumns visit.
On the sketches a side lacing trough lacing holes is visible - the only other closing I know from Mijnheer van der Weyden is the front closing of the Magdalena from the Brague Tryptich.
The sketch shows latter lacing!
(These two are thumbnails - click on to see them bigger)
This one is too tiny - no closure is visible:
But here: the orange-yellowish underdress suggests again a front closure
As well as a nice wee purse!
This picture of a reading Magdalena shows on her decollté a lacing - probably of the dress worn under the robe? But I do love her coif as well!!!
(just click on the thunbnail to see this really nice picture)